LNM Towing & Recovery

My son car was towed from *** Apartments in Laurel, Md. 03/10/2020 when I took him to pick his car up the fee changed, on his sign outside where the car was located stated $175.00 for towing fee, but the problem is when we arrived at *** Beltsville, md *** their was other guys out their waiting,to pick up their car, a tow truck driver was their to release the vehicle, because it was not an office their. he told my son it would be $180.00, that's why I said well the sign says $175.00 the driver said well its on the fence, it says if you pay other than cash it would be $180.00, I said no its not, I said well come and show me, so the driver says let me call the owner, he called the owner and told him my concerns he said the same thing if you pay other than cash you have to pay $5 more, which it does not say that no where on the sign, not even on the receipt. that's bad business, you suppose to honor what the sign says.